Object O stands on the central axis of a spherical or plane mirror. The table refers to the focal distance f, the object distance p, the image distance i, and the lateral magnification m. The image is inverted. Fill in the missing information, including signs.
| f (cm) | p (cm) | i (cm) | m | |
| +26 | *0.40 | |||
* sign not given
Solution-Here mirror must be concave because the image is inverted
We first find the i= i = –pm
= 26*0.40
=10.4
= +10 cm
1/f= 1/u + 1/v.
1/f= 1/10.4+1/26
=>1/f= 0.135
=> f= 7.41
Object O stands on the central axis of a spherical or plane mirror. The table refers...